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Date: Tue, 10 Jun 2008 12:54:44 -0700 From: "Luck, Tony" <tony.luck@...el.com> To: "Christoph Lameter" <clameter@....com> Cc: <akpm@...ux-foundation.org>, <linux-arch@...r.kernel.org>, <linux-kernel@...r.kernel.org>, "David Miller" <davem@...emloft.net>, "Eric Dumazet" <dada1@...mosbay.com>, "Peter Zijlstra" <peterz@...radead.org>, "Rusty Russell" <rusty@...tcorp.com.au>, "Mike Travis" <travis@....com> Subject: RE: [patch 01/41] cpu_alloc: Increase percpu area size to 128k > > > -#define PERCPU_PAGE_SHIFT 16 /* log2() of max. size of per-CPU area */ > > > +#define PERCPU_PAGE_SHIFT 17 /* log2() of max. size of per-CPU area */ > > > > Don't you need some more changes to the alt_dtlb_miss handler in > > ivt.S for this to work? 128K is not a supported pagesize on any > > processor model. > > Ok so this needs to be 18? Yes. 18 will work (256K is an architected page size, guaranteed to be supported by all processor models ... SDM 2:52 table 4-4). -Tony -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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